Shuttle-changing mechanism for looms.



Q. COSSEEAT.

SHUTTLE CHANGING MECHANISM FOR LOOMS. APPLICATION FILED MAR. e, 1907 Patented. Apr. 5, 1910.

3 SEEETS-SHEET 1.

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0. COSSE-RAT.

SEUTTLE CHANGING MEGHANI$M FOR LOOMS.

APPLIOAT ION FILED 3111118, 1907.

Patented Apr. 5, 191%.

3 SHEETS-SHEET 2.

wrwasa- 0. OOSSERAT.

SHUTTLE came-me MECHANISM FOR LOOMS.

V p I APP LIOATION FILED MAR B, 1907- 53 7 i9 Patented Apr. 5, 1910.

3 SHEETS-SHEET 3 OSCAR.

SHUTTLE-CHANGING ifigj 'g 'jgl Specification of Letters Paton 5 Application filed March 8, 1967.

To all whom it may concern: l tle ter an einntv sluittle. i onrthlv. re-start it known that l, Gscnn COSSERAT, a l inn the 10cm.

citizen of the French Republic, residing at iiiniens, France, have invented a Shuttle- (hang'ing illechanisin tor Looms. of which the following is a specification.

this invention relates to automatic shuttle-changing mechanism for looms, the said mechanism being adapted to stop the loom and re-start it when the shutth has been changed.

in embodiment of the invention is illustrated in the annexed drawings, in which- Figures 1, 2 and 3 are respectively plan view. iront viev and side view of that part or the mechanism by which the looni is stopped a predetermined moment and b which tl Hlllll'llt(l1fi11glllg device is opcr l. 5 and 6 illustrate means for at n .l tctr.

preventing the actuation of the shuttlechanging device when the loom is stopped by hand or by any agency other than that which normally causes a change of shuttles to talte place. Fig. 7 illustrates inodilica tion of these means. Fig. 8 illust ates the mechanism which lifts the shuttle-ho): to the shuttle-magazine. Figs. 9 and it) are i'espectivel a trout view and plan view ot the shnttle-niagazine. l l illustrates the mechanism which actnatcs the device for renuwing shuttles from the magazine. l ig l2 and 13 illustrate the i'nechanisni tor rcstarting the loom when the shuttle. has been changed, and the special construction by which the movement of the cams tor actuating the principal parts of the shut le changing mechanism restricted to one revolution. l igs. l4. and 16 illustrate means tor preventing the introduction of a fresh shuttle into the shuttle-box when the shuttie .in use is not in the box. Figs 1? and 18 illus ate a specizl arrangement which allows of using the shuttle-changing inechanisni in connection with fly-cords, and Ill) illustrates the device which prevents the lifting of the box from the la during the working of the loom.

The mechanism executes four distinct operations, which will t'or simplicity be separately described. 'ihcsc operations may be stated as tollows:--l irstly, the stopping of the loom at a certain moment and actuation of the shuttle-changing mechanism. Sec ondly, displacement of one of the shuttleboxes. Fhirdly, substitution of a filled shutis parallel with the .txed breast-beam 100,

so ii the rerti arm ti actuates th hori zontal lever T, v

lined to the said love p boss 0 ot the le er 0, ro ate? he latter out 4 L ot the. patn oi .ver 1. (see Fig. 6).

it the same time the lever l uisengaged from. the abutment and mov one end of the slot 11 in the lined i On being thus released from th l actrates the belt s 13 pivoted. at 1%. ant. connected to by the rod 15. The said tori: driving-be t from the main driving p illey 1:2 to the loose pulley 16. and at. the same t'- 1 places the belt on the pulley 1'? which ates the shuttle-c ianging mechanism l. 2 and rig-.1. 5, t3 anl T illustrate also the mechanism which p events the plao ing of the belt on tie pulley i? when the the lever l shi:

looni is sto need )i' an i a encv other than.

' l .i I the action or the it detecting inechanis n.

Since this mechanism is directly connected to the mechanism already described, and is essential to the proper working of the ioonn its constr iction and action wil be describ d before other parts of the apparatus are reterred to in de ail.

.is stated above. the lever 10 only with drawn by the action of the shatt 5; this tion being transmitted. by the levers t3 and giving free passage to the lever 1. which )la es the belt. on the pulle 17. ll. the loom s provided with a stop motion and the latter perates or it the loom jams, or again it or any reason the ojerator desires to stop he leoni by hand, the lever 10 which is dis- I placed only by the ac lo I of the shaft 5 remain ii place andt s l l belt cannot pass on to the nnlley l7, since the lever l is blocked and held. by the lever ill. in some cases it is new change from taking pl action of the weft detecting" mechanism. for

l example. during the regilation or adjustment of the loom, or the mounting of a new fabric or the like. For this purpose it is sufficient to place apin in the hole 18 in lever 10, this pin entering acorresponding hole 180 in the warp beam, the lever being thus locked when the disengagement is of fected. The spring 8 acting on said lever 10 is tensioned without displacing the said lever against which the lever 1 is stopped and the belt remains on the loose pulley 1-6 (Fig. l-Vhen the loom is regulated or the new fabric mounted, the operator completely removes the pin and the lever 10 is with drawn immediately it receives movement from the detecting apparatus, and thus allows the changing of the shuttles to l e effected each time the weft is exhausted, without intervention on the part of the operator. The use of the pin therefore has only one purpose, viz: to prevent the changing of the shuttle either the will of the operator in certain cases, for example, in order to prevent accidents if he notices that the mechanism is not w rking norina ly, or to allow said operator to regulate the loom in the ordinary way.

T he brake 19 at the circmnference of the fly-wheel 2O fixed to the main shaft of the loom is pivoted at 21 3) to the loom frame and fixed at its other end to the lever 22 pivoted at The arm 24; (Fig. 2) fixed to the lever 1 normally depresses the lever 22, so that while the loom is working the brake 19 is removed from the fly-wheel. 20. li hen, however, the lever 1 from the abutment and rocks toward the right the lever is released and actuated by the spring so that the brake is applied to the fly-wheel and quickly stops the loom. A fly nut 250 is provided for regulating the tension of the spring 25, in order to stop the loom in a predetermined position.

(2) Displacement 07' one of the bmes.-To the hub of the pulley 17 is fixed a small. chain pinion 170 which transmits rotation by means of a chain, or the like, 171 to a larger wheel 17 2 on the cam shaft 26 at the side of the loom (Figs. 3 and 8). The cam 24' n shaft 26 is aday ted to lift the lever 2 8) which engages the cross bar 2%) connecting two parallel rods 30. The latter work in slots and are adapted to be lifted by the lever 28. To the ends of the rods 30 is fixed the box of the loom, and when lifted by means of the lever 2 the rods place the box 33 at the level of the slnittle-n'iagazine 36 (Fig. 9). The shuttlemagazine, which comprises several important improvements and will be described hereinafter, is adapted to oscillate on theaxle 31. When ascending the box comes into contact with the guide 32 which moves the magazine and places it directly in front of the box, so that when the cam 27 has reached its highest position the magazine filled with shuttles is disengaged and the box 33 containing the empty shuttle are at exactly the same level and in line with each othe as in Fig. 9, the empty shuttle 48 being opposite a filled shuttle 37. The latter is then move l, so that it displaces the empty shuttle and takes the place thereof in the box, as will be explained hereinafter.

Before the third operation is described it may be stated that the two parallel rods which carry the box 33 are carried by the lay 34C and rock with the latter. These rods only lift that part of the box 33 which contains the shuttle. The picker remains on the lay during the ascent of the box. Vhen the box has been remo ed from the picker it is open at both ends so that shuttles can pass into and out of the box.

(3) Replacement of the empty shuttle by a; filled shuttle-The shuttle magazine (Figs. 9 and 10) comprises a cast-iron frame made in one piece, the two uprights 35 and 36 of which have i-shaped recesses adapted to receive the points or noses of the shuttles. These uprights are connected at the top by a cross bar 350 and at the bottom by a kind of trough 360 of rectangular cross-section. This trough is provided with a longitudinal slot 361 at the side farthest removed from the workman, and is open at both ends. The magazine is suspended in front of the loom from the axle 31, on which it is rotatable. When a series of shuttles are placed in the frame one above the other the bottom shuttle, which will be designated 37, is in the trough 360. The driver 38 entering at the left-hand end of the trough pushes this shuttle out at the right-hand end, so that the shuttle enters the box 3", which has been lifted in the manner already described. T he driver 38 is then moved back and the space previously occupied by the shuttle 37 is fil ed by the next shuttle of the series. The movement of the driver is produced by the following means. To the shaft 26 is fixed the cam 39 (Fig. 11), which is adapted to actuate the bell-crank-lever 40 in order to pull the cord or chain 41 which passes along a series of grooved pulleys at the level of the shuttle-magazine or river 38. One end of this cord is attached to the stationary hook 4:2, and the other end is attached at 45 to the driver 38, to which is also attached the ribbon L3 wound on the spring barrel 44c. When the cord is pulled to operate the driver the empty shuttle is pushed out of tile shuttle-box by the finger at? fixed to the rod 46; he latter is arranged in front of or behind the magazine, parallel to the shuttles, and is fixed at d5 tothe driver. The removal of the empty shuttle therefore takes place without cooperation of the shuttle 37, and can also be effected in the manner indicated when the magazine is empty. After the shuttle 37 has been thrust by the driver 38 into the place previously occupied by the empty shuttle 48 the spring or linger advances and supports the next shuttle of the series in order to allow the driver to return to its original position. When the shuttle-box has been supplied with a filled shuttle the cam 27 allows the said box to descend and resume its position on the lay, and the linger i3 is pulled back to its normal. position by the spring barrel 4%. when the cam has ceased to actuate the lever elO. The loom can then be re-started.

The restarting of the [CODA- i l) the disk (Figs. 12 and 13) keyed. to or integral. with the cam shaft 9.6 there fixed a crescent-shaped cast-iron bl ck which rotates with the cam shat't and acts on the bent end 511 of the lever 51 fulcrumed at The Jillt 50 is so ad'ustcd that it actuates the lever 51 immediately after the changing of the shuttle. The part 50 lifts the end 51 l. of the lever 5i and the other end of the la tter is thus lowered and depresses the horizontal arm of the lever l, against which it abuts. The lever 1 is thus rotated on its fulcrum 3, removes the brake by means of the arms (F 2), and removes the belt from the pulley 17 and loose pulley 16 on to the fixed pulley 12, the lever 1 being then engaged by the abutment l. until the shuttle in use empty. whereupon the cycle of operations described is repeated. it after these operations the rotation of the cams were not stopped, the latter continuing to rotate by inertia or being driven by the looinmechanism. considerable damage would be caused. To prevent this, mechanism is provided. to restrict the movement oi? the rams to one revoli'ltion and to lock the cam shai't during the normal working of the loom, so that the cams can only be rotated when the shuttle-changing mechanism comes into action. The device used for this purpose will. now be described.

12 is a side view in which the lever 51 is shown in its two end positions. and

Fig. 13 is av plan view oi the device. hilc the loom is working th abutment- 5-3 fixed to the lever 51 is in its upper position and arrests the crescent-shaped block 50. lVhen the shuttle-changing mechanism is actuated the lever 51, which is held against the lever 1 by a spring, is rocked and rein ves the abutment from the block 50. The latter is then able to clear the abutment, and the disk 49 and cam shaft can make one revolution in the direction indicated by the arrow. During this revolution the block 50 aouts against the lever 51, rocks the latter and lifts the abutment 53, against which the block 50 thereimon again abuts. T he block 50 thus itself actuates the device by which its rotation is checked at the moment at which the loom is re-sta-rted.

Denice for preventing the ascent of the SimitZc-bom without the shuttle in use.l:t

{through inadvertence on the partof the weaver or through an accident to the wettdctecting mechanism the shuttle-changing mechanism is operated while the empty shuttle or the partly filled shuttle in use is not in the shuttle-box, two shuttles would be placed on the lay and would cause damage to the warp unless means were provided to prevent the insertion of a. fresh shuttle under these circumstances. A simple de vice which entirely tullils this purpose will now be described.

To the shuttle binder Figs. l-"l to 16 which is presentin all looms and bears against the shuttle for the purposeof checking it during the weaving operation, there is fixed a hook (Figs. 1th. 15 and 16) which takes part in the movements of the part 54;. When the shuttle is in the shuttle box this hook is removed from the catch fixed to the lay, but when the shuttle-box is empty the hook engages the catch. Since the parts and 55 are connected to the vertically movable part of the box, whereas the catch 56 is fixed to the lay. it is obvious that unless the shuttle is in the box the latter cannot ascend. owing to the engagement of the hook with. the catch, and a fresh shuttle cannot therefore, be inserted. The pulley 17 which controls the shuttle changing mechanism being very narrow the belt furnishes exactly the necessary power for elleeting the change of shuttle. it from any cause the box is prevented from rising. the belt slips on said pulley 17, or, it this is insufficient to prevent accidents, the large wheel. 72 can be loosely mounted on the cam shaft- 26, and connected by a tightening collar adjustable on the plate 49 fixed to the cam shaft and this collar which produces friction and the regulation of which can be ellectcd with precision will slide on the plate instead of the belt on the pulley as aforesaid.

Use of the s/ulftZe-c/umging mechanism in connection, with (1. Zoom having fly-cords. (Figs. 1? and 18).To allow of operating the shuttle-changing mechanism in connecti on. with a loom having fly-cords it is necessary that the driver leave open the end ct theshuttle-box, so that the change of shuttle can take place as in the case of a loom having pickers. In order that the end of the box should be free, to allow ot' the shuttle passing out, the driver 58 is made rotatable on the guide-rod 5?. The arm 59 fixed to the rod 60 is adapted to abut against the projection 61 fixed to the magazine, so that the upward movementof the box causes the rod. (30 to be rotated. and the latter by means of the arm 62 rotates the slotted guide 63, which normally retains the driver in a vertical position. By the rotation of the guide and driver the shuttle is enabled to pass out of the box.

&

Figs. 17 and 19 illustrate a device which prevents the upward movement of the shuttle-box by the action of the lay during the working of the loom. While the loom. is normally w 'ng a hoolr at one end of the bell-crank-lever 6% engages the fixed stud and thus prevents the upward move ment of the box (Fig. 19). To allow of lifting the box for the purpose of changing the shuttle the lever 66 which lifts the box abuts against the arm Gtl of the lever 6% and rocks the latter so as to disengage its hook from the stud 65 (Fig. 17). lV hen the shuttle has been changed and the box is lowered a spring causes the lever G l to reengage the stud 65 for the purpose of holding the box down.

/Vhat I claim as my invention and desire to secure by Letters Patent of the United States is 1. in a shuttle-changing mechanism for looms the combination of a driving shaft, a fast and a loose pulley thereon, a third pulley mounted alongside said loose pulley, shuttle-changing mechanism, operative connections between said shuttlechanging mechanism and said third pulley, a belt shifter, lever, means tending to move said lever to throw the belt-shifter to the third pulley, a detent for said lever adapted to hold it so that the shifter is on the fixed pulley, a removable abutment in the path of said lever adapted to restrain its tra .*el so that the shifter does not reach the third pulley, means for releasing the lever from the detent and means for removing the abutment when the changing-mechanism is to be operated.

2. In a shuttle-changing mechanism for looms the combination of a driving shaft, a fast and a loose pulley thereon, a third pulley mounted alongside said loose pulley, shuttle-changing mechanism, operative connections between said shuttle changing JQCllEllllSIll and said third pulley, a beltshifter, a lever, means tending to move said lever to throw the belt-shifter to the third pulley, a detent for said lever adapted to hold it so that the shifter is on the fixed pulley, a removable abutment in the path of said lever adapted to restrain its travel so that the shifter does not reach the third pulley, means for releasing the lever from the detent, means for removing the abutment when the changing mechanism is to be operated, a brake operable on said shaft and means for holding the brake off when the lever is engaged by the detent.

3. The combination with the breast-beam of a loom of a detent and a fixed stop thereon, a lever pivoted to the breast-beam, means connected with the weft mechanism for operating said lever, an abutment pivoted to the breast-beam, belt-shifting gear comprising a lever adapted to be held in three positions respectively by said detent, abutment, and fixed stop, fixed pulley, loose pulley, and shuttle mechanism operating pulley corresponding to said three positions respectively, means connected with said lever for carrying the abutment out of operative position, and means for preventing this movement of the abutment when no shuttle chan e is to take place. l. The combinationwith the f a loom of a detent and a fixed stop theren, a lever pivoted to the breast-beam, ieans connected with the weft mechanism for operating said lever, an abutment pivoted to the breast-beam, belt shifting gear comprising a lever adapted to be held in three positions respectively by said detent, abutment, and fixed stop, fixed pulley, loose pulley, and shuttle mechanism operating pulley corresponding to said three positions respectively, tensional means connected with said lever for carrying the abutment out of operative position and a hand-operated loclr for. holding the abutment in operative position.

In a loom the combination with a shuttle magazine and a shuttle b0): in alinement therewith for change of shuttle, of a-rod located parallel to the shuttles in the magazine, a driver on said rod adapted to force the lowermost shuttle from the magazine into the box, a finger also on said rod in advance of said driver for simultaneously ejecting the empty shuttle from the shuttle box without the full shuttle coming into contact with the empty shuttle, and a spring operated ribbon adapted to support the next shuttle in the magazine.

6. The combination with a shuttle-magazine, means for pushing a shuttle therefrom comprising a tension cord, a lever for tensioning said cord, a cam shaft for operating said lever, a block revolving with said shaft, a lever operated by said block and a stop on said lever also cooperating with the block to limit its action to one revolution.

7. In a loom in which the shuttles are op erated by fly-cords, the combination with a guide rod, a fly movable on said rod and a slotted guide rotatable on said rod and adapted to normally retain the driver in position, of means connected with the magazine for rotating said slotted guide to release the driver and permit the throwing out of the shuttle.

In witness whereof I have signed this specification in the presence of two witnesses.

OSCAR GOSSEA AT.

breast-beam lVitnesses D. MoNoHen, AUeUsrIN LURAN. 

